Chimpanzees, Bonobos and Barbary Macaque Laugh Too
[N]onhuman primates such as the common chimpanzee, the pygmy chimpanzee [also known as the bonobo], and the Barbary macaque produce a positively-toned, pant-like vocalization during tickling or during rough play which is similar to laughter (de Waal, 1988;.Marler & Tenaza, 1977; Van Hooff, 1972; Vettin & Todt, 2005). Some acoustic properties of human laughter during tickling and the vocalizations of Barbary macaques and chimpanzees during play are similar (Vettin & Todt, 2005).
de Waal, F.B.M. (1988). The communicative repertoire of captive bonobos (Pan panicus) compared to that of chimpanzees. Behaviour, 106, 183-251
Marler, P., & Tenaza, R. (1977) Signaling behavior of apes with special reference to vocalization. In T.A. Sebeok (Ed.), How animals communicate (pp.965-1033). Bloomington: Indiana University Press.
Van Hooff, J. A. R. A. M. (1972). A comparative approach to the phylogeny of laughter and smiling. In R. A. Hinde (Ed.), Non-verbal communication (pp. 209-237). Cambridge, England: Cambridge University Press
Vettin, J., & Todt, D (2005) Human Laughter, social play, and play vocalization of non-human primates: an evolutionary approach. Behaviour, 142, 217-240
Quoted on Sat Jul 28th, 2012